Magnum Venus Plastech TESTING & ADJUSTING YOUR MVP PUMPING SYSTEM - Manual (Page 27)

Testing & Adjusting Manual
Rev. 01/2013 Page | 27
Down stroke Upstroke Down stroke Upstroke Down stroke
T B T B T B
Result 2:
Material delivered at the top and bottom of the stroke is hot (curing very rapidly). Also
thin areas of material might be noticeable compared to the volume delivered in the
middle of the stroke, see figure above.
Indicates: Low resin at the top (T) and bottom (B) of the pump stroke.
Probable Cause: There is no or improper accumulation effect in the resin
system.
Solution: Resin accumulator full of hard material or has a blockage. Clean resin
filter and reinstall. Incorrect accumulator installed. Pump pressure is too high,
lower resin pressure. (For chargeable accumulator systems see section below)
Start Spray Test Direction of gun travel End Spray Test
Result 3:
Material delivered on the catalyst pump up-stroke (from the bottom of the stroke to the
top) is not curing or slow cure (see figure above).
Indicates: No catalyst is being delivered on the up-stroke.
Probable Cause: Worn or damaged catalyst piston seal
Damaged catalyst pump cylinder.
Worn or damaged piston body ball.
Damaged piston body ball seat.
Solution: Replace worn and damaged parts, see Service and Repair Manual.